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Finding the Fourth Proportional to 130,803, 180,572.12 and 87,767.08

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Solution

The fourth proportional to 130,803, 180,572.12 and 87,767.08 is: 121,161.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,803 : 180,572.12 = 87,767.08 : x
  2. Step 2: Convert to fraction form
    130,803/180,572.12 = 87,767.08/x
  3. Step 3: Cross multiply
    130,803x = 180,572.12 × 87,767.08
  4. Step 4: Simplify right side
    130,803x = 15,848,287,701.81
  5. Step 5: Solve for x
    x = 15,848,287,701.81/130,803
  6. Step 6: Final answer
    x = 121,161.50

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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.