Home / 105,669,009.60-158,508,496.68-87,190,681.50

Finding the Fourth Proportional to 105,669,009.60, 158,508,496.68 and 87,190,681.50

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Solution

The fourth proportional to 105,669,009.60, 158,508,496.68 and 87,190,681.50 is: 130,790,133.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,669,009.60 : 158,508,496.68 = 87,190,681.50 : x
  2. Step 2: Convert to fraction form
    105,669,009.60/158,508,496.68 = 87,190,681.50/x
  3. Step 3: Cross multiply
    105,669,009.60x = 158,508,496.68 × 87,190,681.50
  4. Step 4: Simplify right side
    105,669,009.60x = 13,820,463,849,069,688
  5. Step 5: Solve for x
    x = 13,820,463,849,069,688/105,669,009.60
  6. Step 6: Final answer
    x = 130,790,133.28

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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.