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Finding the Fourth Proportional to 127,509.15, 175,955.58 and 70,916.88

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Solution

The fourth proportional to 127,509.15, 175,955.58 and 70,916.88 is: 97,861.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,509.15 : 175,955.58 = 70,916.88 : x
  2. Step 2: Convert to fraction form
    127,509.15/175,955.58 = 70,916.88/x
  3. Step 3: Cross multiply
    127,509.15x = 175,955.58 × 70,916.88
  4. Step 4: Simplify right side
    127,509.15x = 12,478,220,752.19
  5. Step 5: Solve for x
    x = 12,478,220,752.19/127,509.15
  6. Step 6: Final answer
    x = 97,861.38

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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.