Home / 145,931.69-218,981.93-61,686.39

Finding the Fourth Proportional to 145,931.69, 218,981.93 and 61,686.39

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Solution

The fourth proportional to 145,931.69, 218,981.93 and 61,686.39 is: 92,565.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,931.69 : 218,981.93 = 61,686.39 : x
  2. Step 2: Convert to fraction form
    145,931.69/218,981.93 = 61,686.39/x
  3. Step 3: Cross multiply
    145,931.69x = 218,981.93 × 61,686.39
  4. Step 4: Simplify right side
    145,931.69x = 13,508,204,428.50
  5. Step 5: Solve for x
    x = 13,508,204,428.50/145,931.69
  6. Step 6: Final answer
    x = 92,565.26

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.