Home / 145,883,493.85-201,318,619.64-78,902,526.77

Finding the Fourth Proportional to 145,883,493.85, 201,318,619.64 and 78,902,526.77

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Solution

The fourth proportional to 145,883,493.85, 201,318,619.64 and 78,902,526.77 is: 108,885,161.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,883,493.85 : 201,318,619.64 = 78,902,526.77 : x
  2. Step 2: Convert to fraction form
    145,883,493.85/201,318,619.64 = 78,902,526.77/x
  3. Step 3: Cross multiply
    145,883,493.85x = 201,318,619.64 × 78,902,526.77
  4. Step 4: Simplify right side
    145,883,493.85x = 15,884,547,775,574,788
  5. Step 5: Solve for x
    x = 15,884,547,775,574,788/145,883,493.85
  6. Step 6: Final answer
    x = 108,885,161.41

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.