Home / 99,271.34-136,999.70-56,259.20

Finding the Fourth Proportional to 99,271.34, 136,999.70 and 56,259.20

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Solution

The fourth proportional to 99,271.34, 136,999.70 and 56,259.20 is: 77,640.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,271.34 : 136,999.70 = 56,259.20 : x
  2. Step 2: Convert to fraction form
    99,271.34/136,999.70 = 56,259.20/x
  3. Step 3: Cross multiply
    99,271.34x = 136,999.70 × 56,259.20
  4. Step 4: Simplify right side
    99,271.34x = 7,707,492,837.24
  5. Step 5: Solve for x
    x = 7,707,492,837.24/99,271.34
  6. Step 6: Final answer
    x = 77,640.67

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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.