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Finding the Fourth Proportional to 115,312.34, 159,130.76 and 65,010.98

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Solution

The fourth proportional to 115,312.34, 159,130.76 and 65,010.98 is: 89,715.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,312.34 : 159,130.76 = 65,010.98 : x
  2. Step 2: Convert to fraction form
    115,312.34/159,130.76 = 65,010.98/x
  3. Step 3: Cross multiply
    115,312.34x = 159,130.76 × 65,010.98
  4. Step 4: Simplify right side
    115,312.34x = 10,345,246,655.74
  5. Step 5: Solve for x
    x = 10,345,246,655.74/115,312.34
  6. Step 6: Final answer
    x = 89,715.00

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1.5x scale

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.